110 kV交联聚乙烯绝缘电缆耐压试验

Voltage withstand test of 110 kV XLPE insulated cable

针对目前应用最为广泛的交联聚乙烯(Crosslinked Polyethylene,XLPE)绝缘电缆,梳理了几种常用的耐压试验方法,分析了其工作原理,并介绍了几种试验各自特点以及应用范围。通过一次110 k V/7 km电缆交流耐压试验方案,指出并联补偿串联谐振交流耐压试验能够增加试验装置的灵活性,在有效减小回路电流的同时,降低试验对设备容量的要求,给出高电压、长距离电缆耐压试验现场试验应注意的一些问题,为以后试验提供参考。

Aiming at the most widely used XLPE insulated cable at present,several commonly used voltage withstand test methods are sorted out,their working principle are analyzed,and the characteristics and application scope of several tests are introduced.Through a 110 kV/7 km cable AC voltage withstand test scheme,it is pointed out that the parallel-compensation series-resonant AC voltage withstand test can increase the flexibility of the test device,effectively reduce the loop current,reduce the test requirements for equipment capacity.Some problems that should be paid attention to in the field test of high-voltage long-distance cable voltage withstand test are pointed out,which can provide reference for future tests.